Office Mobile 2010 Beta has appeared in the Microsoft Marketplace. However, it will expire on April 5, 2010. It will uninstall any previous versions of Office Mobile as well, but if your device came pre-installed with Office Mobile, it will not be affected.

It seems that there are a couple of new features, particularly with Outlook. You will now be able to group messages to a contact, which will make your Inbox tidier.

Features:-

• View and edit your Microsoft® Office® documents with confidence.
• Stay connected to work from anywhere with SharePoint Workspace Mobile.
• Stay connected to work from anywhere with SharePoint Workspace Mobile.
• Use PowerPoint Mobile as a presentation aid.

It is available for download on Windows Marketplace for Mobile here.